Machine for treating cinematograph-films.



l w. FRANK. MACHINE FOR TREATING CINEMATOGRAPH FILMS.

APPLICATION FILED MN. 26, l9l6. V I 1,21 1,42. Patented Jan. 9,1917.

2 snsnsquisr w. FRANK. momma FOR mums CiNEMATOGRAPH FILM-S. 7

APPLICATION FILED HUI-26.1916- h Patented Jan. 9,1917.

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" ()FFICE.

WILLIAM FRANK, or sr. LoU1s, MIssonaI.

MACHINE Fox TREATING cmEMyroenArfi-Fmms.

Specification of-Letters l'atent.

Application filed January as, 1916. Serial No. 74,509.

T 0 all whom it may concern:

Be it known that 1, WILLIAM FRANK, a citizen of the United States,residing at the city of St. Louis, State of Missouri, have invented anew and useful Machine for Treating Cinematograph-Films, of which thefollowing is a specification.

This invention relates to a machine for treating cinematograph films,and consists in the novel design, arrangement and combination of partshereinafter more fully disclosed.

The commercial form of film for cinematograph machines has been found torequire a thin coating of parafiin or other similar plastic material ateither edge of the film strips on the emulsion side. This coating isrequired to prevent the injury of the film due to the edges of the filmstrip becoming engaged with parts of the film feeding mechanism of themachine. Heretofore it has been quite generally the practice to coat thefilms by. hand, which has been found to be unsatisfactory as it is anexpensive method and also results, unless great careis taken, inoverrunning the edges of the film too far causing a blurring of the partof the film carrying the picture.

It is the object of the present invention to produce a machine wherebystrips of film may be coated at each edge with parafiin or likematerial, that is to say the object is the provision of a machinetoaccomplish the coating of the films mechanically for the purposesabove pointed out. w

Additional features and objects attainable from the present inventionwill be readily appreciated by thoseskilled in the art, without specificmention, from the following detailed description thereof taken in connection with the accompanying drawings in which Figure 1 is a sideelevation of the machine of the present invention, showing also inconventional form the feeding reel and the receiving reel for the filmstrip. Fig. 2 is a front end elevation of the machine. Fig. 3 isv a rearend elevation of the machine. Fig. 4 is an enlarged transverse sectionof a part of the machine taken substantially on the line 4--4 of. Fig.2. Fig. 5 is a trans verse section on the line 55 of 2 to illustratefurther details of construction.

As illustrated in the drawings the machine comprises a frameincluding abase 1, side members 2 and a top member 3. The

Patented J an. 9, 1917.

frame obviously can be erected and held in adjustment in any preferredmanner but as illustrated includes transverse tie members 4 and suitablypositioned struts or braces 5.

In this frame are mounted the transverse rolls for guiding the strips offilm and for maintaining the edges thereof in contact with the suitablypositioned paraffin. 'The guiding mechanism includes a duplicate set ofpresser rolls 6 and 7. The presser rolls arejournaled in the frame ofthe machine transversely thereof, the upper rolls 6 being rigidlymounted in the frame and the lower rolls 7 being yieldingly mounted inthe frame. The yielding support or mounting for each of the, rolls 7includes a vertically slidable bearing 8 supported upon an expansionspring 9 nested in the frame of the machine, as clearly illustrated inFig. 1 of the drawing, it being understood-that the rolls 7 areyieldingly mounted at both ends. The tendency of the springs 9 is topress the rolls 7 toward the rigidly supported rolls 6 so as to engageand grip the film. When the film has been fed into the machine betweenthe rolls 6 and 7 and the springs have caused the adjustment of therolls 7, so as to grip the film, the rolls 7 may be locked or' set inthe grippingposition by binding devices comprising wing nuts 10 screwedthrough the frame in'such a manner as to engage against the edge of themovable bearings 8.

The rolls 6 are provided on their periphery adjacent to the end withflanges 11, the

space between the flanges being the width of the film strip, so thatsaid flanges act as Within the rings 12 thereon which are in alinementwith the rings on the rolls 6. The rolls 6 and 7 are arranged inparallel pairs so that when the film strip isbrought to a positionbetween the rings 12 it will be frictionally gripped and held inalinement in its forward movement by the flanges 11 on the upper rolls.

As will be observed from the drawings the film strip is fed from thefeed reel 13, between the rolls 6 and 7, passing forward on to a platenroller l l'from which it passes over a receiving reel 15, it beingunderstood that the reel 15 is wound manually or in the .usual manner.The roller 14 is rigidly jourcakes of.

the rolls 6 and 7. The surface of the roll 14 includes outer annularfianges 16 and raised rings 17 the flanges 16 and rings 17 being spacedas are the flanges 11 and the rings 12 on the rolls 6 and 7 Below theroller lt-are mounted in spaced relationship tubes 18 for containingcakes of paraffin 19. The tubes 18 are arranged below each of the rings17 on the roller 14, so that as the cakes of paraffin are raised in thetubes by the action of expansion springs 20, which carry at their upperends the disks 21, the top of the cakes 19 will be held yieldinglyagainst the. edges of the film strip. The elevation of the cakes 19' maybe controlled by providing the disks 21 with pins 22. which projectthrough vertical slots 23 I formed in one wall of the tubes 18.

At graduated intervals and extending transversely from the slots 23 arenotches 24. By turning the pins 22 slightly they may be engaged indesired ones of the notches 2d so as to arrest the upward movement ofthe.

cakes 19, which is desirable when the film is being adjusted in themachine or when the machine is not in use.

' j ustable wing In order that the tubes 18 may be readily removed forthe purpose of replenishing the supply of paraflin, Iprovide adjustablesupports for said tubes comprising hinged straps 25 mounted on the tiemembers 4. Any suitable form of keeper device may be provided forlocking the straps in position to hold the tubes in adjustment, the formshown in the drawings comprising bolts 26 which pass throughperforations in the ends of the straps and are adapted to receive adnuts27 I am aware that numerous changes may be made in the design andarrangement of:

. parts without departing from the spirit and scope of the invention. Ido not limit myself therefore to exact details, but

What I claim and desire tosecure by Let.

- of the platen, substantially as specified.

raised rings-within the flanges adapted to engage the edge of a filmstrip, separate containers for plastic bars of lubricating magarages ingwitnesses.

terial removably mounted in the frame below said platen and at eitherside thereof,

so as to present the ends of separate plastic bars to the edge of thefilm strips below said rings on said platen, a movable support for theplastic bars in each container, a spring in each'of said containerstending to press the movable support upwardly, thereby holding the" endsof the bars of plastic material in yielding contact with the -edges ofof the film, and means for arresting the upward movement of said movablesupports.

2. A machine for treating cinematograph films comprising a frame,tensioning mechanism including duplicate pairs of rollers. the upperrollers of each pair rigidly mounted in the frame and the lower rollersof each pair movably mounted in the frame, all of said rollers beingprovided with extending rings adaptedtoen'gage only the edges of thefilmstrip, a platen roller mounted in the frame forward of said tensioningmechanism, raised rings on said platen roller adapted to engage thestrip, containers .for plastic bars mounted below the respective ringson said platen and adapted to present the upper end of the plastic barsat each side of the strip of film below the points where the film isengaged by said rings, separate means for yieldingly elevating theplastic bars in said containers to maintain them in contact with thelongitudinal edges of the film strips, and means for independentlycontrolling the upward yieldingly maintaining separate bars oflubricating material below the edges of the film strip engaged-by theengaging portion In witness whereof I have signed this specification inthe presence of two. subscrib- WILLIAM FRANK. Witnesses:

L. C. KINGSLAND,

N. G; Burner.

edge only of the film'

